KIROVETS K-744R1, K-744R2, K-744R3, K-744R4 tractors
163
Fault
Remedy
engine being in operation:
– the generator drive belt is weakly
strained;
Tighten the belt.
– break of the power circuit of the
excitation winding, oxidation of adapter
terminals, loosening of terminal clamps;
Restore the circuit integrity, clean and tighten
the adapter terminals.
– hanging up, wear of brushes, fracture of
springs in brush holders;
Check the condition of the brush assembly, if
necessary, replace the brushes, springs.
– earth fault of wires feeding the generator
excitation winding;
Eliminate short-circuit in the power circuit of the
generator excitation winding
– the voltage regulator has decreased the
level of voltage being controlled in the
electrical network of the tractor.
Replace the voltage regulator.
FOR K-744R1St TRACTOR:
The battery is not charged, the indicator lamp
“Battery charging” is not alight (in the
instrument panel, upper block of indicator
lamps), the engine cannot be started. Cause:
break of the genD terminal circuit
Press the lamp serviceability check button for
the upper block of indicator lamps.In doing so,
the “Battery charging” lamp will come on (the
extreme right-hand lamp). Holding the button run
the engine. Release the button. In this mode it
possible to go to the place of destination in order
to replace the generator.
Fig. 41 Receiver of air conditioning system
1
– receiver; 2 – inspection glass
from condenser
to the evaporation-
heating unit
